﻿<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="zh" xmlns:wicket>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Title</title>
    <style type="text/css" media="all">

    </style>
</head>
<body>
<a href="#" wicket:id="expandAll">Expand</a>
<a href="#" wicket:id="collapseAll">Collapse</a>
<span wicket:id="tree"></span>
</body>
</html>